Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 170/55-17 | 245/80-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.36 (618.8) | 29.43 (747.6) | 5.07 (128.8) 20.8% |
| Width inches (mm) | 6.69 (170) | 9.65 (245) | 2.95 (75) 44.1% |
| Circum. inches (mm) | 76.54 (1944.02) | 92.47 (2348.65) | 15.93 (404.64) 20.8% |
| Sidewall Height inches (mm) | 3.68 (93.5) | 7.72 (196) | 4.04 (102.5) 109.6% |
| Revolutions per mile (km) | 827.84 (514.4) | 685.22 (425.77) | -142.62 (-88.62) -17.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.16 mph (38.89 km/h) |
| 25 mph (40.23 km/h) | 30.2 mph (48.61 km/h) |
| 30 mph (48.28 km/h) | 36.24 mph (58.33 km/h) |
| 35 mph (56.33 km/h) | 42.29 mph (68.05 km/h) |
| 40 mph (64.37 km/h) | 48.33 mph (77.77 km/h) |
| 45 mph (72.42 km/h) | 54.37 mph (87.49 km/h) |
| 50 mph (80.47 km/h) | 60.41 mph (97.22 km/h) |
| 55 mph (88.51 km/h) | 66.45 mph (106.94 km/h) |
| 60 mph (96.56 km/h) | 72.49 mph (116.66 km/h) |
| 65 mph (104.61 km/h) | 78.53 mph (126.38 km/h) |
| 70 mph (112.65 km/h) | 84.57 mph (136.1 km/h) |
| 75 mph (120.7 km/h) | 90.61 mph (145.82 km/h) |
| 80 mph (128.75 km/h) | 96.65 mph (155.55 km/h) |
| 85 mph (136.79 km/h) | 102.69 mph (165.27 km/h) |
| 90 mph (144.84 km/h) | 108.73 mph (174.99 km/h) |
| 95 mph (152.89 km/h) | 114.77 mph (184.71 km/h) |
| 100 mph (160.93 km/h) | 120.81 mph (194.43 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1744 | 2026 | 2182 | 2278 | 2382 | 2456 | 2538 | 2634 | 2768 | 2901 | 3050 | 3168 | 3384 | 3621 | 3807 | 3925 | 3992 | 4237 | 4578 | 5320 |
Better Fuel Economy Factory Ratios Increased Power
